Cimo ST. LOUIS MINIMIX User manual

VACUUM INVESTMENT MIXER
ST. LOUIS MINIMIX
INSTRUCTION MANUAL

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INDEX
CE CONFORMTY DECLARATION …………………………………………….………………………... 3
INTRODUCTION……………………………………………………………………………………………...4
WARRANTY………………………………………...…………………………………………………………4
GENERAL NOTES………………………………………...…………………………………………………..4
MACHINE FEATURES ………………………………………………………………………………………4
OPERATOR SAFETY…………………………………………………………………………………………4
TRANSPORT ………………………………………………………………………………………….………4
TECHNICAL DATA………………………………………………………………………………………..…5
VACUUM PUMP CONNECTION……………………………………………………………………………5
PRELIMINARY OPERATION……………………………………………………………………………….5
WATER DOSING TANK AND GRADUATE STICKER SPECIFICATIONS……………………....……5
MIXER USE ( PART 1 )………………………………………….…………………………………………….6
CONTROL PANEL…………………………………………………………………………………………….6
PARAMETER SETTING…………………………………………………………………………...…………7
MIXER USE ( PART 2 )………………………………………….…………………………………………….8
UNIT DRAWING & PARTS LIST…………………………………………………………….……….. 9 - 10

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INTRODUCTION
These notes are provided to our Customer in order to offer the informations necessary for the correct installation ,
operation use and maintenance of the unit purchased. Only technical staff, previously authorized by the Producer,
will guarantee a correct service of the machine and its components.
Any modication or repair made without prior CIMO authorization and agreement, will immediately cancel warrenty
conditions and this circumstance will save the producer from any kind of responsibility forward any person and things
suffering damages that might occur. Please carefully read the instructions notes before operating the machine.
CIMO is reserving the right to modify its products without previous notice.
WARRANTY
CIMO PRODUCTS ARE COVERED BY TWELVE MONTHS WARRANTY
STARTING FROM THE DELIVERY DATE TO CUSTOMER
EXCEPT ELECTRIC AND ELECTRONIC COMPONENTS THAT ARE COVERED SIX MONTHS ONLY.
WARRANTY IS LIMITED TO REPAIR OR CHANGE OF THE FAULT PARTS
UPON A PREVIOUS AUTHORIZATION AND INSPECTION BY OUR STAFF OR CIMO DELEGATE.
LABOUR, TRANSPORT, CUSTOMS AND OTHER COSTS WILL BE AT TOTAL CUSTOMER CHARGE.
THE TOTAL CHANGE OF THE COMPLETE MACHINE IS ALWAYS TO BE ESCLUDED FROM WARRANTY
CONDITIONS. PARTS REPAIRED OR CHANGED WILL NOT EXTEND THE WARRANTY PERIOD.
GENERAL NOTES
St. Louis vacuum mixers are machines studied and designed for the investment mixing and flask mold filling for the
lost wax casting of the jewelry making process. The main concept of the St.Louis mixing units is the total operativity
under vacuum situation.
Traditionally investment was mixed with water in open air and with this process the final blend result was not really
homogeneous and precise so the surface of the precious metal casted was not so smooth and complete.
More, the large quantity of gases incorporated in the mixing was giving such a huge percentage of porosity.
St.Louis mixer, with the vacuum total process and the timing, quantity and water dosing very precise, assures
the best quality performing results in one of the most delicate process-step by step of the lost wax casting system.
THE MACHINE FEATURES
- TOTAL INVESTMENT POWDER DEGASIFICATION INTO THE MIXING CONTAINER
- EXACT AND PRECISE WATER QUANTITY IN THE RATIO 1:40 TO BE ADDED TO POWDER
- ADJUSTABLE MIXING SPEED
- CORRECT AND PRESETTED MIXING TIMING
- ADJUSTABLE INTENSITY VIBRATION FOR THE INVESTED FLASKS
OPERATOR SAFETY
PROTECTION MASK FOR OPERATOR IS COMPULSORY REQUESTED
PROTECTION HAND GLOVES FOR OPERATOR ARE SUGGESTED
THIS UNIT MUST BE OPERATED BY PROFESSIONAL STAFF
AND FOR ITS CONCEPT PURPOSE BUILT ONLY !
TRANSPORT
THE MACHINE SHOULD BE ALWAYS TRANSPORTED IN VERTICAL POSITION
AND HAS TO BE LIFTED FROM THE BOTTOM CHASSIS BASEMENT ONLY.
ATTENTION
PLEASE AVOID TO HOLD, LIFT OR PULLING AND PUSHING THE MACHINE FROM ITS CENTRAL
CONSTRUCTION PART ( PLEXIGLASS MIXING BOWL, FLASK CHAMBER OR MAIN MOTOR SHAFT)

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TECHNICAL DATA
VOLTAGE: 220 V. - 50/60 HZ. SINGLEPHASE – CONSUMPTION: KW. 0, 8 PROTECTION FUSE: 4 AMP.
MAX INVESTMENT CAPACITY : GRAMS 800 - MAX FLASK SIZE: DIAMETER 100 mm. X 120 mm. HIGHT
VACUUM PUMP CONNECTION
THE MIXER MUST OPERATES WITH A VACUUM PUMP OF MINIMUM CAPACITY 6 CBM/HOUR.
THE VACUUM PUMP IS SUPPLIED SEPARATELY AS OPTIONAL ACCESSORY.
ON THE REAR PART OF THE MACHINE BASE FIND THE VACUUM PIPE HOSE CONNECTOR.
VACUUM PUMP MUST BE CONNECTED DIRECTLY TO A SEPARATE 220 VOLTS PLUG.
PRELIMINARY OPERATIONS
Connect the vacuum hose from the rear part of the machine to an external vacuum pump (6 cbm/h.).
WHENEVER THE UNIT IS SUPPLIED WITH OUR VACUUM PUMP,
REMIND TO FILL THE PUMP OIL TANK WITH ITS SPECIFIC OIL
BEFORE SWITCHING ON THE PUMP MOTOR.
Connect the unit to an electrical plug that must have ground.
Fill the open dosing tank ( located on the right part of the motor column of the unit )
with clean water ( temperature between 20° and 24° C. ) correctly to the top level line
of the sticker indicating the water proportion quantity. ( ratio: 1 kg. powder = 400 cc. water )

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WATER DOSING TANK AND STICKER SPECIFICATIONS:
The sticker on the dosing water tank is indicating kg. and pounds with numbers from 0 to 2 ( kg. )
IT IS PRINTED CONSIDERING THE STANDARD RATIO: 1 KG. DRY INVESTMENT
POWDER = 400 CC. WATER
THE STICKER LINES AND NUMBERS ARE INDICATING THE DRY POWDER GRAMS ( or
POUNDS )
FROM TOP LINE WATER LEVEL ( under KG printed ) THE QUANTITY OF WATER
CORRESPONDING TO EACH KILOGRAM IS 400 CC.
Practical example:
IF WE HAVE LOADED kg. ,700 INVESTMENT DRY POWDER INTO THE MIXING
CONTAINER, WE HAVE TO TRANSFER INTO THE MIXING CONTAINER A QUANTITY
OF WATER AS MUCH AS WE SEE MARKED ON THE LEVEL LINE VALUE KG 1,7 ON
THE DOSING COLUMN STICKER IN ORDER TO HAVE THE EXACT 40% PROPORTION
OF WATER
FOR THE INVESTMENT LOADED IN THE MIXING CONTAINER.
Please be informed that the STICKER shows just 40% RATIO IN THE RIGHT SIDE and
38% RATIO IN THE LEFT SIDE
Attention: in presence of special Platinum Investment powder sometimes the requirement is
to add a different water percentage. We supply with PT version sticker with 30 % ratio.
ATTENTION: in the water dosing tank is possible to put water and binder together, for PT
investment that need. But is important when job is finish put only water inside the water
dosing tank and using the vacuum transfer the water to mixing chamber to clean the water
piping from the acid of the binder.
----- MAX
WATER LEVEL
←
ARROW INDICATING
INVESTMENT
LOADED: KG. 0,7

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MIXER USE ( part one ):
FRONT CONTROL PANEL
VIB vibration control
MIXER mixing control
1
2
3
4
5
6
7
A SELF AUTOMATIC SWITCH-OFF HAS BEEN INSTALLED IN THE MACHINE
Whenever the unit will remain for more than one minute without operation it will switch off automatically
Lift up the top motor ( 1) located on the unit column and turn it
to the right side of the mixer.
DISCONNECT THE FAST JOINTER ( REF. 5 )
Remove the top black cover with the mixing blade from the clear
mixing chamber ( 2 )
Place the flask (with wax tree on its rubber base) on the central
part of the lower black plate base ( 3 ) of the MIXER.
Load the investment powder (after its weighting ) into the mixing
chamber . Check that the pouring valve ( 4 ) of mixing chamber
is logically closed .
BE SURE THAT THE MIXING CHAMBER IS DRY
Replace the mixing chamber on its original location and insert
the mixing blade on it. Place the top cover on it and connect pipe
for tap ( ref 5 ). Be sure that vacuum release valve (6) is closed.
REPLACE THE TOP MOTOR ON ITS POSITION
( shaft into the blade-gear )
1
2
3
4
5
6
1 vacuum gauge
2 increase value
3 decrease value
4 on – off mixing motor
5 motor speed
6 on – off vibrator
7 vibrator intensity

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PARAMETER SETTING:
WHEN SWITCHING ON THE MACHINE, THE DISPLAY SHOWS THE MIXING TIME PRESETTED:
Example: 4.5 means 4 minutes and 30 seconds / 3.0 means 3 minutes zero seconds.
To modify the mixing time ( operation possible only when mixing motor is OFF )
increase or decrease time by pushing “ 2 “ or “ 3 “ button.
The value is automatically memorized.
MIXING MOTOR SPEED:
This value has been pre settled already by CIMO srl.
To set a different mixing motor speed ( operation possible when mixing motor is ON or OFF ):
a) push button “5” until led is ashing
b) increase or decrease motor speed by pushing “2” or “3”
c) after 5 seconds from the last pushing on 2 or 3 the setting procedure is over.
d) WHEN SWITCHING OFF THE MACHINE the parameter will go back again to the initial
CIMO value.
VIBRATION INTENSITY:
To set the vibration intensity ( operation possible when vibration is ON or OFF ):
a) push button “7” until led is ashing
b) increase or decrease vibration intensity by pushing “2” or “3”
c) after 5 seconds from the last pushing on 2 or 3 the setting procedure is over.
d) WHEN SWITCHING OFF THE MACHINE the parameter will go back again to the initial
CIMO value.
LEAVE THE FLASK SOME MINUTES TO DRY ON THE FLASK PLATE
MEANWHILE THE OPERATOR IS WASHING AND RINSING THE BLADE AND THE
MIXING CONTAINER.
DRY ALL BEFORE A NEW OPERATION.
ALARMS ON DISPLAY
A 1 : ELECTRICAL SHORT – CONTROL BOARD DAMAGED
A 2 : MIXING MOTOR OVERHEATING
A 3 : MIXING MOTOR MECHANICAL FAULT ( too much powder loaded )
( internal blade bearing dirty )
( mixture too much dry )
A 4 : LOW TENSION AT THE UNIT
To reset the alarms: switch off and switch on the unit

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MIXER USE ( second part )
ONCE THE INVESTMENT POWDER HAS BEEN LOADED INTO
THE TOP PART OF THE MIXING CHAMBER (A ) AND ALL THE
MACHINE COMPONENTS HAVE BEEN PLACED IN THEIR
ORIGINAL POSITION,
CHECK THE TIME SETTED ON THE DISPLAY
( WE SUGGEST 4 MINUTES: 4. 0 )
START THE VACUUM PUMP MOTOR ( SEPARATE SWITCH
EXTERNAL FROM THE UNIT ) AND LEAVE THE VACUUM
PUMP RUNNING UNTIL THE VACUUM LEVEL GAUGE IS
REACHING THE VACUUM CONDITION.
( MINIMUM VALUE OF “ 60 ” ) THEN, SWITCH OFF THE PUMP.
OPEN THE TOP WATER TAP (B) AND WATER WILL FLOW
DIRECTLY INTO THE MIXING CHAMBER.
CLOSE IMMEDIATELY THE TAP WHEN THE WATER LEVEL
OF THE DOSING TANK WILL REACH THE CORRESPONDENT
LINE OF THE INVESTMENT QUANTITY LOADED.
( AS FOR INSTRUCTIONS ON PREVIOUS PAGE ).
START THE MIXING BY PUSHING BUTTON “4”
WHEN THE MIXING TIME PRESETTED WILL BE ZERO,
THE MOTOR OF THE MIXING BLADE WILL STOP AND
A BUZZER WILL SOUND TO WARN THE OPERATOR FOR THE
IMMEDIATE POURING OF THE MIXTURE INTO THE FLASK.
OPEN THE SIDE POURING VALVE KNOB (E)
( PULL TOWARD EXTERIOR) IN ORDER TO FILL THE FLASK
WITH THE MIXTURE.
CLOSE THE VALVE ( E ) WHEN FLASK IS TOTALLY FILLED
START VIBRATION BY PUSHING BUTTON “ 6 ”
AND KEEP THE VIBRATION INTENSITY SMOOTH
FOR A COUPLE OF MINUTES.
STOP THE VIBRATION AND RELEASE VACUUM BY OPENING
THE TOP ROUND SMALL VALVE OVER THE TOP COVER OF
THE UNIT (F)
PLEASE CONSIDER THAT ALL THE PROCESS IS DONE UNDER
VACUUM SO DO NOT EXPECT TO SEE “BOILING-BUBBLING”
FROM THE INVESTED FLASK. IN ORDER TO GET AN EXACT
VIBRATION INTENSITY PLACE YOUR HAND ON TOP MIXER
COVER TO PRACTICALLY FEEL THE VIBRATION INTENSITY.
AT THE END OF THE OPERATIONS PLEASE NOTE THAT IT IS
BETTER TO LEAVE THE FLASK ON THE FLASK PLATE
OF THE MIXER AND QUICKLY WASH AND RINSE PROPERLY
THE MIXING CHAMBER ( CARE TO CLEAN THE INTERNAL
PART OF THE POURING VALVE, THE BLADE SHAFT AND
THE INTERNAL PART OF THE TOP COVER )
A
B
E
F

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ELETTRONIC
BOARD
N. CODE N. CODE N
1 92LT2A 21 MIX92LT2A21 42 MIX92LT2A42
2 92LT2A 22 MIX92LT2A22 43 MIX92LT2A43
3 92LT2A 23 MIX92LT2A23 44 MIX92LT2A44
4 MIX92LT2A4 24 MIX92LT2A24 45 MIX92LT2A45
5 MIX92LT2A5 25 MIX92LT2A25 46 MIX92LT2A46
6 MIX92LT2A6 26 MIX92LT2A26 47 MIX92LT2A47
7 MIX92LT2A7 27 MIX92LT2A27 53 MIX92LT2A53
8 MIX92LT2A8 28 MIX92LT2A28 59 MIX92LT2A59
9 MIX92LT2A9 29 MIX92LT2A29 60 MIX92LT2A60
10 MIX92LT2A10 30 MIX92LT2A30 61 MIX92LT2A61
11 MIX92LT2A11 31 MIX92LT2A31 62 MIX92LT2A62
12 MIX92LT2A12 32 MIX92LT2A32 63 MIX92LT2A63
13 MIX92LT2A13 33 MIX92LT2A33
14 MIX92LT2A14 34 MIX92LT2A34
15 MIX92LT2A15 35 MIX92LT2A35
16 MIX92LT2A16 36 MIX92LT2A36
17 MIX92LT2A17 37 MIX92LT2A37
17 MIX92LT2A17 38 MIX92LT2A38
18 MIX92LT2A18 39 MIX92LT2A39
19 MIX92LT2A19 40 MIX92LT2A40
20 MIX92LT2A20 41 MIX92LT2A41

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N. CODE N. CODE
1 MIX92LT2B1 23 MIX92LT2B23
2 MIX92LT2B2 24 MIX92LT2B24
3 MIX92LT2B3 25 MIX92LT2B25
4 MIX92LT2B4 26 MIX92LT2B26
5 MIX92LT2B5 27 MIX92LT2B27
6 MIX92LT2B6 28 MIX92LT2B28
7 MIX92LT2B7 30 MIX92LT2B30
8 MIX92LT2B8 31 MIX92LT2B31
9 MIX92LT2B9 32 MIX92LT2B32
10 MIX92LT2B10 33 MIX92LT2B33
11 MIX92LT2B11 34 MIX92LT2B34
12 MIX92LT2B12 35 MIX92LT2B35
13 MIX92LT2B13 36 MIX92LT2B36
14 MIX92LT2B14 37 MIX92LT2B37
15 MIX92LT2B15 38 MIX92LT2B38
16 MIX92LT2B16 40 MIX92LT2B40
17 MIX92LT2B17 41 MIX92LT2B41
18 MIX92LT2B18 42 MIX92LT2B42
19 MIX92LT2B19 43 MIX92LT2B43
20 MIX92LT2B20 44 MIX92LT2B44
21 MIX92LT2B21 45 MIX92LT2B45
22 MIX92LT2B22 46 MIX92LT2B46